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R. SPITTA,S1.

i APPARATUS FOR TANNING HIDES. No. 308,008. Patented Nov. 1l, 1884.

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APPARATUS FOR TANNING HIDES.

SPECIFICATION forming pari; of Letters Patent N0. 308,003,6latedNovember 11, 1884:.

Application tiled August 31, 1883. (No model.)

To all whom. t may concern:

Be it known that I, RICHARD SPITTA, Sen., a subject of the King ofPrussia, in the Empire of Germany, residing at the city ofBrandenburgon-the Havel, in said Kingdom of Prussia, have inventedcertain new and useful Improvements in Apparatus for Tanning Hides andother purposes, of which the following is a specification.

This invention relates to vats for tanning, dyeing, or bleaching, inwhich a circulation or agitation of the tanning, dyeing, or bleachingliquor is maintained during the treatment of the hides or fabricswithout removing them from the vat.

The object of the invention is to secure a rapid and uniform change oragitation of the liquor throughout the vat.

Figure 1 is a vert-ical transverse section of this apparatus in the formof a double vat. Fig. 2 is partly a plan with the cover removed andpartly a horizontal section on line 2 2, Fig. l, of a portion of a vatforming a part of this apparatus.

Similar letters of reference indicate corresponding parts in both gures.

Avat or tank, A, constructed of wood, stone, or other suitable material,is provided at one side with a partition, c, which divides the vat intoa tanningcompartment, D, and plungerchamber E. The partition a isrecessed at its upper and lower edges, or of less depth than the wall ofthe tank, whereby passages c c are formed between thetanning-compartment and the plunger-chamber at the top and bottom of thevat. Slats or bars 7L, provided with hooks from which hides aresuspended, rest at their ends upon strips or ledges s, -fastened to thewalls of the tanning-compartment. A horizontally-elongated plunger, P,adapted to lit and move within the plunger-chamber E, is reciprocatedvertically therein by means of a rod, d, and a lever, f, to which saidrod is connected. The lever f is pivoted at e to a suitable support orstandard, g, and provided with a hook at its outer end adapted toreceive a handle.

The tanning or other liquor is supplied to or removed from the vat bymeans of the pipe m, the lower end of which discharges into thetanning-compartment, the upper end, m', being designed to be connectedto the pump.

The operation is as follows:v The hides being suspended in thetanning-compartment upon the hooks of the bar It, and the vat, includingthe tanning-compartment and plunger-chamber, being lled withtanning-liquor, the movement of the lever f will reciprocate theelongated plunger e, whereby a uniform agitation or circulation of theliquor within the tank will be effected, the downward stroke of theplunger forcing a uniform quantity ot'- liquor through the lowerelongated opening, c', in the partition a into the tanning-compartment Dthroughout its entire length, and drawing an equal quantity of liquorthrough the elongated opening c at the top of said partition into saidplunger-chamber, the upward movement of the plunger producing a currentin a direction the reverse of that just described.

It is preferable to construct the apparatus in the form of a doubletank, as shown in the drawings, in which the interior of the tank isdivided into two tanning-compartments, D D', by means of a centralpartition, a, said partition being provided with an opening, t, at thebottomof the tank, whereby communicationl between the compartments isestablished. This opening i may be closed by a slide, t, so that thecompartments may be filled with the liquor or emptied independentlyofeaeh other. In this case one of the tanningcompartments, as D', may beprovided with two sets of hooked bars arranged one above the other,whereby a larger number of hides of-small size may be suspended in thetank. In this case the tank is provided with an additionalplunger-chamber, E', having a horizontally-elongated plunger, PQ similarto the plunger P,` heretofore described. The plunger P may be connectedby the rod d with the same lever or walkingbeam f with which the plungeris connected. In such arrangement the plunger P moves downward while theplunger P moves upward, and vice versa. In this manner a circulation ismaintained within the separate tanning-compartments, and if the slide tbe opened there will also be a circulation between said compartments.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. The combination, in an apparatus for tanning andother purposes, of a vat provided with a partition dividing said vatinto a tanning -eonipartnient and a plunger-chamber, said partitionhaving openings or passages at its top and bottoni for the circulationof the liquor within the Vat, and a horizontally-elon gatedvertieally-reeiproeating plunger adapted to lit and move within saidplungerehaniber, substantially as deseribed.

2. The combination, in an apparatus for tanning and other purposes, of avat provided with two tanning-compartments separated by a centralpartition, and with two plungerehanibers separated from thetanningeenipartinents by means of partitions having openings at theirupper and lower edges for the

